Sinker carrier for flat knitting machines



July 1951 R. PARTHUM 2,562,435

SINKER CARRIER FOR FLAT KNITTING MACHINES Filed March 7, 1949 Patented July 31 1 951 SINKER CARRIER FOR FLAT KNITTING MACHINES Richard eardrum, Orholm', Denmark ApplicationlMarch 7, 1949,.Serial No. 79,986 In Sweden March17, 1948 1 Claim.

The present invention relates to an improvement in the construction of a sinker carrier for flat knitting machines.

In such knitting machines the sinkers are inserted between an upper and a lower carrier part that have transverse grooves in which the sinkers are guided. These grooves are out very carefully as well with reference to their depth as to their relative spacing, and the carrier parts are thereupon assembled by means of screws at each end. To obtain a correct interspacing of the lower and upper carrier members distance members are inserted between the ends of the carrier parts. It is absolutely necessary for proper operation of the knitting machine that all the sinkers slide easily within the grooves without any play whatever. Between the screws at each end of the carrier a number of clamping members are arranged in such a manner that any upward bend of the upper carrier member between the end clamping screws is prevented.

These intermediate clamping members may to some extent be employed for tightening up to compensate wear, but such a tightening up will result in a downward bending of the upper carrier part, and consequently regulation can only take place about the middle of the carrier. The curvature of the upper carrier part will furthermore result in an alteration of the vertical position of some of the sinker grooves, and the sinkers guided by these grooves will become more or less deformed. In order to make up for wear it is therefore necessary to remove all the clamping members, lift the upper carrier part and reduce the spacing members until the proper spacing between the carrier parts is obtained.

The object of the present invention is to render such a dismantling of the sinker carrier unnecessary, thus saving considerable time in the correction of faults in the operation of the sinkers.

A further object is to provide means by which it is possible in a simple manner to obtain a more correct adjustment of the carrier parts in relation to the sinkers than has hitherto been possible.

A still further object of the invention is to provide means which in a simple manner render possible a rapid adjustment of the carrier parts in order to reduce the deformation of the sinkers due to wear.

Other objects and a fuller understanding of the invention may be had by referring to the following description taken in conjunction with the accompanying drawing in which like references are applied to like parts in the various figures, and in which Fig. 1 is a vertical section through a sinker carrier in a fiat knitting machine showing a single sinker inserted between the upper and lower carrier parts.

Fig. 2 is a top elevation of the sinker carrier on an increased scale and Fig. 3 is a section on line IIIIII in Fig. 1 shown on an enlarged scale.

Referring to the drawing, only such parts of a fiat knitting machine that have direct relation to the invention are shown. Thus I indicates the upper part of the sinker carrier, and 2 indicates the lower carrier part broken away from the remainder of the machine. Between these carrier parts a number of sinkers 3 are disposed in transverse grooves formed in the opposed surfaces of the carrier parts. The two carrier parts I and 2 are assembled by means of a screw 4 at each end of the carrier, which screws are inserted through holes in the upper carrier part I and screwed into threaded holes in the lower carrier part 2. Between the two end screws 4 a number of clamping members of a peculiar construction are arranged. These intermediate clamping members are shown in Fig. 3 and comprise each a thin metal strip 5 inserted between two sinkers and attached by its one end to a head 6 inserted in a recessed hole in the lower surface of the lower carrier member 2, while the opposite end of the metal strip 5 is attached to a threaded pin I inserted within a smooth hole in the upper carrier member I and provided with a nut 8 by means of which the threaded pin I can be adjusted in order to regulate the tension of the assembled clamping screw 5, 6, I.

According to the invention the upper sinker carrier part I is at each end provided with a number, e. g. four threaded holes penetrating the carrier part. Into each of these holes is screwed a slotted screw 9 that abuts the upper surface of the lower carrier part 2. Preferably these four screws 9 at each end of the carrier are arranged relatively spaced around the clamping screw 4 applied to the end of the carrier member in question, e. g. pair-wise at either side of the screw 4.

In case any irregularities occur in the displacement of the sinkers 3 between the upper and lower carrier parts I and 2 resulting in poor knitting, it is possible by loosening the clamping screws 4 and thereupon adjusting one or several of the slotted screws 9, to readjust the relative position of the upper and lower carrier parts I and 2, and in this manner regulate the guiding of the sinkers until they all operate in, their proper manner so that the formation or loops during the knitting becomes normal. After adjustment by means of the screws 9, the clamping screws 4 are again tightened, and owing to the presence of the screws 9 there will be no risk of tightening the carrier parts I and 2 too much, 5

as likewise it is unnecessary to take the carrier members apart in order to carry out a readjustment.

I declare that what I claim and desire protected by Letters Patent is: 10

In a sinker carrier for fiat knitting machines, the combination of two superimposed elongated carrier parts provided with transverse grooves in their opposed surfaces, sinkers arranged for reciprocal displacement within the grooves, screws 15 for assembling the carrier parts at each end thereof, interspaced clamp members disposed between the said end screws to assemble the intercarrier part.

RICHARD PARTHUM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,271,852 Brumbach Feb. 3, 1942 2,384,451 Brumbach Sept. 11, 1945 2,459,411 Brown Jan. 18, 1949 

